Phonograph attachment



E T. HULL. I I PHONOGRAPH ATTACHMENT.

APPLICATION FILED DEC.I0. IBIS. 1,859,599. Patented Nov. 23, 1920..

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Inventor.

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PHONOGRAPH ATTACHMENT. APPLICATION FILED nzc.10.1919.

1,359,599, Patented Nov. 23, 1920.

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EDWARD T. HULL, OF NEW YGRK, N. Y.

PHONOGRAPI-I ATTACHMENT,

Specification of Letters Patent.

Patented Nov. 23, 120.

Application filed December 10, 1919. SeriaIl No. 343,922.

To all whom it may concern:

Be it known that I, EDWARD T, HULL, a citizen of the UnitedStates, and resident of New York city, N. Y., have invented certain new and useful Improvements in Phonograph Attachments, of which the following is a specification.

My invention relates to phonographs and its principal objectis to provide a device which maybe attached to an ordinary phonograph' using a disk record, which will cause the needle to be raised from the record when the piece has been played and the tone arm carrying the sound box to return to the starting position andremain at rest clear of the record, at the same time automatically stop the machine.

A further object isto provide a cev ce which will be simple, durable, efficient, economical to manufacture and which may be readily attachedto any phonograph:

My invention consists in the novel. construction and arrangement and relatlon of parts as set forth in the accompanying,

specification and drawings in which:

Figure l is a plan view of a portion of a phonograph equipped with my device.

Fig. 2 is a side elevation of Fig. 1.

Fig. 3 is a detail of the latch mechanism which controls the operation of my device.

Fig. 4 is a detail of a supporting collar used in modifications of my device.

Figs. 5, 6, and 7 are detail views of a modified form. In these drawings 1 inclicates a phonograph having the usual tone arm 2 and sound box 3. 4 is a rotating rec- 0rd support or table which carries a disk record 5, the playing surface thereof being indicated at 6. Pivoted to the tone arm at a point near its outer end is a member 7 having arms 7 a and 7", one end of said member 7 termiating in a hook 7 which engages beneath the neck of the sound box 3 and arms at the other end having downwardly extending parts 8 and 8, which are joined beneath the tone arm to constitute a braking surface 8 for the record support 4. Suitably attached to the tone arm at the point where the member 7 has its pivot is a spring 9 which engages the member 7 and tends to press the right hand end, Fig. 2, downward to normally hold the braking surface against the record support or table and the sound box clear of the record. A release bar 10 is rotatably mounted in bearings 11 and 12 on the tone arm, the bar 10 having a downturned outer end 13 terminating at a point slightly above the record and an upturned inner end 14 provided with a shoulder 14: which engages the end of the arm 7 a of the member 7 Inv operating the device, before the needle is placed on the record, the inner end of the member 7 (the right hand end, Fig. 2) is raised against the tension of he spring 9 until it engages the notch l4? of the release bar, which will cause the lever or member 7 to be held in this position against the tension of the spring. Thereafter the sound box may be lowered or swung down until the needle rests on the record with its neckabove the hook-shaped portion 7 As the brake surface 8 is now held away from the table the latter is freed; rotate. As the needle reaches the end. of the playing surface of the record the downturned end 13 of the release bar 10 comes in contact with a tab or marker 15 which may be glued or otherwise secured to the record. The tab 15is so placed as to deflect or rotate the release bar 10 and thus release the member 7 from the shoulder 14c at the inner end of said bar 10 whereupon the tension of the spring 9 rocks the member 7 on its pivot to simultaneously raise the sound box 3 and bring the braking surface 8 in contact with the mandrel 4;, the rotation of which against the braking surface swings the tone arm 2 back to its starting point as the mandrel comes to rest. The release bar 10 has a hinged joint 10 formed by fastening together the two portions of release bar 10 by a pin passing through these two parts only which permits its outer portion to raise with the sound box and yet rotate as a whole in journals 11 and 12. The brake surface 8 is curved on a proper arc to properly cooperate with the edge of the record support or table as the parts rotate.

While I have described my device as applied to what is known as the Sonora phonograph, it may, with minor changes, he used on any phonograph of this general type, for instance, on a Victor machine, by simply secur ng a collar 16 such as I have shown in Fig. 4 to the tone arm to which the member 7 would be pivoted. It will be readily seen that any record must only be played once to determine the proper place for the tab to be secured and thereafter the device will act at the predetermined point.

Instead of using a contact piece on the record disk to effect the release, I may provide the records with a spiral guide groove 6 leading inward from the inner extremity of the playing groove in the record, and utilize the inward swing of the tone arm to unlock the operating bar as shown in Figs. 5 to 7 In this form I provide a vertically disposed latch lever 1O pivoted upon a horizontal axis 00 to a bracket or lug secured to the side of the tone arm, this lever having a locking shoulder :0 designed to e'ngagebeneath the end projection y of the actuating lever W. The phonograph case is provided with a post 5 which is so positioned that as the tone arm swings inward under the action of the needle traveling in the spiral groove 6 the lower end of the latch or lockmg lever 10 strikes this post whereby the shoulder as is withdrawn from beneath the pro'ection y.

hat I claim is:

1. The combination with a phonograph having a tone arm provided with a vertically swinging member carrying a sound box, of a lever pivotally supported from and substantially parallel to said tone arm and having a part adapted to ralse said swinging member, a brake surface carried by said lever adapted to engage the edge of the record support.

2. The combination with a phonograph having atone arm provided with a vertically swinging member carrying a sound box, of a lever pivotally supported from and substantially parallel to said tone arm and having a part adapted to raise said swinging member, a convex brake surface carried by said lever adapted to engage the edge of the record support.

8. The combination with a phonograph having a tone arm provided with a vertically swingingsound box carrying member, of a lever pivotally supported from said tone arm and having a part adapted to raise said sound box portion, a spring tending to swing said lever to raise said sound box portion, a two-part rotatable latch lever pivoted in line with the hinge of the sound box carrying member and provided with a shoulder remote from the sound box to support said first mentioned lever against the action of the spring.

4. The combination with a phonograph of a lever pivotally supportedfrom said tone arm and having a part adapted to raise said sound box portion, a spring tending to mally support said first mentioned lever against the action of the spring, and coacting means on the record to cause the latchlever to rotate upon completion of the playing of the record, thereby allowing the spring to act.

In testimony whereof I affix my si nature.

EDWARD T. PFULL,

having a tone arm provided with a verti- I cally swinging sound box carrying-member, 

